Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Ru/MgO catalyst with dual Ru structure sites for efficient CO production from CO2 hydrogenation

Journal Article · · Chemical Engineering Journal
 [1];  [1];  [2];  [1];  [1];  [1];  [3];  [3];  [4];  [5];  [6]
  1. Univ. of Central Florida, Orlando, FL (United States)
  2. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
  3. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  4. Columbia Univ., New York, NY (United States)
  5. Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Univ. of Washington, Seattle, WA (United States)
  6. Univ. of California, Riverside, CA (United States); Univ. of Central Florida, Orlando, FL (United States)
The development and comprehension of supported metal catalysts for CO2 hydrogenation is of paramount importance in mitigating the net CO2 emissions. Supported Ru catalysts have been widely recognized in facilitating CO2 methanation, on which recent findings suggest that the CO2 hydrogenation process can be manipulated to favor the reverse water–gas shift (RWGS) pathway by precisely adjusting the size of Ru particles. However, the size-dependent impact of Ru remains a topic of lively debate. In this work, Ru/MgO catalysts with Ru in the form of single atoms (Ru1) and few-atom cluster (RuFAC) structures were prepared for CO2 hydrogenation. The 1.0Ru/MgO catalyst (with 1 wt.% of Ru), featuring a mixture of Ru1 and RuFAC with a size of 0.6–1.0 nm, showed the highest CO yield (38% at 500 °C) with balanced CO2 conversion and CO selectivity. Transient CO2 hydrogenation and temperature-programmed surface reaction (TPSR) studies suggested that the adsorbed CO2 species participated in CO2 hydrogenation. On Ru1 sites, CO2 hydrogenation followed the RWGS pathway, resulting in the production of CO. In contrast, on RuFAC sites, the enhanced H2 dissociation ability, along with the presence of adsorbed bidentate and monodentate carbonate species at the Ru-MgO interfaces, facilitated the formation of CH4 through the CO2 methanation pathway. In conclusion, this study highlights the critical roles of Ru structure and local environment in defining the CO2 hydrogenation pathways and provides new design principles for highly active Ru-based catalysts.
Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
AC05-76RL01830; SC0012704
OSTI ID:
2336718
Report Number(s):
PNNL-SA--192165
Journal Information:
Chemical Engineering Journal, Journal Name: Chemical Engineering Journal Vol. 487; ISSN 1385-8947
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Ru-based catalysts for efficient CO2 methanation: Synergistic catalysis between oxygen vacancies and basic sites journal March 2023
Methanation of CO, CO2 and selective methanation of CO, in mixtures of CO and CO2, over ruthenium carbon nanofibers catalysts journal December 2010
Highly-selective CO2 conversion via reverse water gas shift reaction over the 0.5wt% Ru-promoted Cu/ZnO/Al2O3 catalyst journal April 2019
Decoupling the effect of Ni particle size and surface oxygen deficiencies in CO2 methanation over ceria supported Ni journal June 2021
Atomically dispersed Pt/CeO2 catalyst with superior CO selectivity in reverse water gas shift reaction journal August 2021
Recent progress in syngas production via catalytic CO2 hydrogenation reaction journal October 2021
Role of interfacial oxygen vacancies in low-loaded Au-based catalysts for the low-temperature reverse water gas shift reaction journal February 2023
Mechanistic insights into chemical reduction of CO2 by reverse water-gas shift reaction on Ru(0001) surface: The water promotion effect journal April 2022
Nano-faceted stabilization of polar-oxide thin films: The case of MgO(111) and NiO(111) surfaces journal September 2022
Methanation of carbon dioxide on Ru/Al2O3: Catalytic activity and infrared study journal November 2016
Effect of metal loading on the CO2 methanation: A comparison between alumina supported Ni and Ru catalysts journal October 2020
CO2 hydrogenation over Ru hydrotalcite-derived catalysts journal January 2024
Carbon dioxide adsorption on oxide nanoparticle surfaces journal June 2011
Elevated temperature CO2 capture on nano-structured MgO–Al2O3 aerogel: Effect of Mg/Al molar ratio journal April 2014
Controlled synthesis of MgO with diverse basic sites and its CO2 capture mechanism under different adsorption conditions journal March 2018
Ru/K2CO3–MgO catalytic sorbent for integrated CO2 capture and methanation at low temperatures journal August 2023
CO2 methanation on Ru-doped ceria journal March 2011
Catalytic behavior of supported Ru nanoparticles on the {1 0 0}, {1 1 0}, and {1 1 1} facet of CeO2 journal September 2015
Influence of pretreatment temperature on catalytic performance of rutile TiO2-supported ruthenium catalyst in CO2 methanation journal January 2016
Mechanism of CO2 reduction by H2 on Ru(0 0 0 1) and general selectivity descriptors for late-transition metal catalysts journal November 2016
CO2 methanation using metals nanoparticles supported on high surface area MgO journal March 2023
Recent trends in developments of active metals and heterogenous materials for catalytic CO2 hydrogenation to renewable methane: A review journal August 2021
A nonlinear filtering algorithm for denoising HR(S)TEM micrographs journal April 2015
Adsorption and Dissociation of CO2 on Ru(0001) journal March 2017
Experimental and Computational Synergistic Design of Cu and Fe Catalysts for the Reverse Water–Gas Shift: A Review journal May 2022
Low-Temperature CO 2 Methanation over CeO 2 -Supported Ru Single Atoms, Nanoclusters, and Nanoparticles Competitively Tuned by Strong Metal–Support Interactions and H-Spillover Effect journal May 2018
Ru-Catalyzed Reverse Water Gas Shift Reaction with Near-Unity Selectivity and Superior Stability journal October 2021
In Situ FTIR Spectroscopic Analysis of Carbonate Transformations during Adsorption and Desorption of CO 2 in K-Promoted HTlc journal June 2010
CO 2 Reduction on Supported Ru/Al 2 O 3 Catalysts: Cluster Size Dependence of Product Selectivity journal October 2013
MgO/Al2O3 Sorbent for CO2 Capture journal September 2010
Overturning CO2 Hydrogenation Selectivity with High Activity via Reaction-Induced Strong Metal–Support Interactions journal March 2022
Active Site Dependent Reaction Mechanism over Ru/CeO 2 Catalyst toward CO 2 Methanation journal May 2016
Tuning Selectivity of CO 2 Hydrogenation Reactions at the Metal/Oxide Interface journal July 2017
Low-Temperature Restructuring of CeO 2 -Supported Ru Nanoparticles Determines Selectivity in CO 2 Catalytic Reduction journal September 2018
Adsorption and Reaction of CO 2 on the RuO 2 (110) Surface journal May 2002
Lewis Acido-Basic Interactions between CO 2 and MgO Surface: DFT and DRIFT Approaches journal March 2012
Interfacial compatibility critically controls Ru/TiO2 metal-support interaction modes in CO2 hydrogenation journal January 2022
CO 2 methanation by Ru-doped ceria: the role of the oxidation state of the surface journal January 2015
Methanation of CO 2 and reverse water gas shift reactions on Ni/SiO 2 catalysts: the influence of particle size on selectivity and reaction pathway journal January 2015
Catalytic reduction of CO 2 by H 2 for synthesis of CO, methanol and hydrocarbons: challenges and opportunities journal January 2016
Selective CO 2 methanation on Ru/TiO 2 catalysts: unravelling the decisive role of the TiO 2 support crystal structure journal January 2016
Mesoporous CoO-supported palladium nanocatalysts with high performance for o-xylene combustion journal January 2018
CO2 methanation property of Ru nanoparticle-loaded TiO2 prepared by a polygonal barrel-sputtering method journal January 2009
Recent advances in catalytic hydrogenation of carbon dioxide journal January 2011
Structure of the hydrogen-stabilized MgO ( 111 ) − ( 1 × 1 ) polar surface: Integrated experimental and theoretical studies journal March 2005
Highly active copper-ceria and copper-ceria-titania catalysts for methanol synthesis from CO2 journal July 2014

Similar Records

CO2 methanation reaction pathways over unpromoted and NaNO3-promoted Ru/Al2O3 catalysts
Journal Article · Wed Jun 08 20:00:00 EDT 2022 · Catalysis Science and Technology · OSTI ID:1885245

FTIR spectroscopic study of the interaction of CO[sub 2] and CO[sub 2] + H[sub 2] over partially oxidized Ru/TiO[sub 2] catalyst
Journal Article · Mon Feb 28 23:00:00 EST 1994 · Journal of Catalysis; (United States) · OSTI ID:7034802

Low-Temperature Restructuring of CeO2-Supported Ru Nanoparticles Determines Selectivity in CO2 Catalytic Reduction
Journal Article · Mon Sep 24 20:00:00 EDT 2018 · Journal of the American Chemical Society · OSTI ID:1484844